Explain details about room comfort condition should consider the following three main factors: i. Dry bulb temperature; ii. Relative humidity; and iii. Air movement (air velocity).
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- Select two saturated and two unsaturated samples of air from the dataset of pressure and temperature given below: Pressure (mb): 10, 20, 30 Temperature (°C): 10, 20, 30 Let A and B be two air samples, where A: (T=30°C, P=25 mb) and B: (T=30°C, P=30 mb). For each sample, determine the following: a. Saturation vapor pressure b. Dew point c. Relative humidity d. If samples A and B were cooled to 15°C. What would be their relative humidity? What would be their dew point temperature?In regards to a cooling tower practical, the values in the table below are what I have found from the psychometric chart but I was wondering using this how would I be able to determine the following parameters for each load case: Relative humidity of inlet air and outlet air Humidity ratio of inlet and outlet air Enthalpy of inlet and outlet air Specific volume of inlet and outlet air1. Plot the four locations in the psychrometric chart and determine the other properties foreach condition using a psychrometric chart (Appendix 8a and 8b). Locations of air Tdb, °C Twb, °C Ambient air 32 28 Conditioned air 25 20 Air at the dryer inlet 30 23 Air at the dryer outlet 33 27 3. What is the relationship between relative humidity and temperature? What about humidityratio and temperature?
- The specific heat of air under standard atmosphericpressure, in SI units, is 1003 N · m/ kg · K. The specific heatof air under standard atmospheric pressure, in U.S. Customaryunits (ft · lb /slug · 0 R), is?HVAC (Already answered here in bartleby. Do not copy. Calculations are needed.) UPVOTE WILL BE GIVEN. ANSWERS ARE GIVEN ALREADY. PLEASE WRITE THE COMPLETE SOLUTIONS. A room contains moist air with a dry bulb temperature of 25°C and a wet bulb temperature of 21°C. Find a) Specific Humidity (Ans. W = 0.0139) b) Relative Humidity (Ans. RH = 69%) c) Specific Volume (Ans. V = 0.863 m³/kg) d) DPT (Ans. DPT = 19.1°C) e) Specific Enthalpy (Ans. h = 60.5kJ/kg)Sling Psychrometer Readings (use the table on the next page to find the Relative Humidity) Trial Outside conditions Wet Bulb Temperature Dry Bulb Temperature Relative Humidity % 1 Mostly Sunny 14 C 20 C 2 Partly cloudy 16 C 20 C 3 Sunny 10 C 22 C 4 Cloudy 22 C 22 C PART A: Using the data above, if the Dry and Wet Bulb Temperatures are close to each other, what does that mean about the Relative Humidity? What does the Dry Bulb Temperature relate to? On a day that it is sunny outside, would you expect the wet and dry bulb temperature to be close to, or far from each other? PART B: If the Dewpoint Temperature and Temperature are far from each other, what does that mean about the relative humidity? On a day that it is raining, would you expect the Dewpoint Temperature and Temperature to be close to each other, or far from each other?
- The data provided by a water bottling company for the year 2020 to carry out Break Even Analysis and provide them the results, is as follows. The fixed cost of the year is 9000.0 R.O The estimated sales are 2200000 units The cost of water treatment / unit 12 baize The cost of bottling / unit 08 baize The cost of labelling / unit 08 baize The cost packing / unit 10 baize The cost of labour and maintenance / unit 20 baize The cost of 1 liter bottle (plastic bottle) 12 baize Each unit is sold at price 95 baize Construct the B.E.P chart on a graph sheet and indicate M.o.S, B.E.P and also indicate the new B.E.P, & M.o.S after the improvement measures has been taken and show all mathematical calculations. 1. Determine the B.E.P 2. Determine the profit 3. Margin of safety. 4. Write your decisions to improve the profits of the company and to reduce the B.E.PA work group of 5 workers in a certainmonth produced 500 units of output working 8hr/day for 22 days in the month. (a) Whatproductivity measures could be used for thissituation, and what are the values of theirrespective productivity ratios? hint (moth, day,and hours) (b) Suppose that in the next month,the same work group produced 600 units butthere were only 20 workdays in the month.Using the same productivity measures asbefore, determine the productivity index usingthe prior month as a base.The ideal gas law relates the pressure P, volume V, absolute temperature T (Kelvin), and amount of gas n. The law is P = mAT where R is the gas constant. An engineer must design a large natural gas storage tank to be expandable to maintain the pressure constant at 2.2 atmospheres. In December when the temperature is -15°C, the volume of gas in the tank is 28,500 ft°. What will the volume of the same quantity of gas be in July when the temperature is 31°C? (Hint: Use the fact that n, R, and P are constant in this problem. Note also that Kelvin = °C+273.2)
- The standard design conditions for air-conditioning systems established by the Air-Conditioning, Heating and Refrigeration Institute (AHRI) are outside temperature _____F, inside temperature ______F, with a humidityof____%.Last Oct. 3rd, the temperature in Quezon City was 81°F, the barometric pressure was 29.8 in, and the relative humidity was 90%. Estimate the following: a) mole fraction of water in the air (4 decimal places) b) dew point (°C) (4 decimal places) c) molal humidity (4 decimal places) d) absolute humidity(4 decimal places) e) percentage humidity (4 decimal places).Thermodynamics problem. While at sea level the atmospheric pressure is 100 kPa, at the summit of Mount Everest, the pressure is reduced to 35 kPa. a) What is the saturation temperature of water? What is the specific volume of water in liquid and gaseous state?